Last time I posted, I commented on the fact that winter temperatures in New Hampshire were almost 7°C warmer in 2016 than 2015, and that “spring 2016 is just around the corner.”
It turns out that spring has been a long time coming. While it isn’t a particularly late year overall, it does seem that it is a particularly slow year. Take a look at the “greenness” data we derive from imagery from our PhenoCam overlooking the Boston Common. What you will notice is the much more gradual rise in greenness compared to previous years. In 2016, greenness began to trend upward in mid-March, and isn’t going to peak until late May. By comparison, in 2015, greeness began to trend upwards beginning in late April, and it reached its peak by mid-May.
The pictures below compare April 19, 2015 (left) with March 19, 2016 (right) – they look pretty…
View original post 174 more words